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ATMOSPHERE - Baroness Thatcher Funeral - St Paul's Cathedral High at St Paul's Cathedral on April 17, 2013 in London, England (Footage by WireImage Video/Getty Images)
ATMOSPHERE - Baroness Thatcher Funeral - St Paul's Cathedral High at St Paul's Cathedral on April 17, 2013 in London, England (Footage by WireImage Video/Getty Images)
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ATMOSPHERE - Baroness Thatcher Funeral - St Paul's Cathedral High at St Paul's Cathedral on April 17, 2013 in London, England (Footage by WireImage Video/Getty Images)
ATMOSPHERE - Baroness Thatcher Funeral - St Paul's Cathedral High at St Paul's Cathedral on April 17, 2013 in London, England (Footage by WireImage Video/Getty Images)
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ATMOSPHERE - Baroness Thatcher Funeral - St Paul's Cathedral High at St Paul's Cathedral on April 17, 2013 in London, England (Footage by WireImage Video/Getty Images)
ATMOSPHERE - Baroness Thatcher Funeral - St Paul's Cathedral High at St Paul's Cathedral on April 17, 2013 in London, England (Footage by WireImage Video/Getty Images)
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ATMOSPHERE - Baroness Thatcher Funeral - St Paul's Cathedral High at St Paul's Cathedral on April 17, 2013 in London, England (Footage by WireImage Video/Getty Images)
ATMOSPHERE - Baroness Thatcher Funeral - St Paul's Cathedral High at St Paul's Cathedral on April 17, 2013 in London, England (Footage by WireImage Video/Getty Images)
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Baroness Thatcher's coffin arrives at St Paul's at Baroness Thatcher Funeral - St Paul's Cathedral High at St Paul's Cathedral on April 17, 2013 in London, England (Footage by WireImage Video/Getty Images)
Baroness Thatcher's coffin arrives at St Paul's at Baroness Thatcher Funeral - St Paul's Cathedral High at St Paul's Cathedral on April 17, 2013 in London, England (Footage by WireImage Video/Getty Images)
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Boris Johnson at Baroness Thatcher Funeral - St Paul's Cathedral High at St Paul's Cathedral on April 17, 2013 in London, England (Footage by WireImage Video/Getty Images)
Boris Johnson at Baroness Thatcher Funeral - St Paul's Cathedral High at St Paul's Cathedral on April 17, 2013 in London, England (Footage by WireImage Video/Getty Images)
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Philip Hammond, Secretary of State for Defence at Baroness Thatcher Funeral - St Paul's Cathedral High at St Paul's Cathedral on April 17, 2013 in London, England (Footage by WireImage Video/Getty Images)
Philip Hammond, Secretary of State for Defence at Baroness Thatcher Funeral - St Paul's Cathedral High at St Paul's Cathedral on April 17, 2013 in London, England (Footage by WireImage Video/Getty Images)
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Nick Clegg at Baroness Thatcher Funeral - St Paul's Cathedral High at St Paul's Cathedral on April 17, 2013 in London, England (Footage by WireImage Video/Getty Images)
Nick Clegg at Baroness Thatcher Funeral - St Paul's Cathedral High at St Paul's Cathedral on April 17, 2013 in London, England (Footage by WireImage Video/Getty Images)
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Norman Tebbit at Baroness Thatcher Funeral - St Paul's Cathedral High at St Paul's Cathedral on April 17, 2013 in London, England (Footage by WireImage Video/Getty Images)
Norman Tebbit at Baroness Thatcher Funeral - St Paul's Cathedral High at St Paul's Cathedral on April 17, 2013 in London, England (Footage by WireImage Video/Getty Images)
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Cabinet Ministers arrive at Baroness Thatcher Funeral - St Paul's Cathedral High at St Paul's Cathedral on April 17, 2013 in London, England (Footage by WireImage Video/Getty Images)
Cabinet Ministers arrive at Baroness Thatcher Funeral - St Paul's Cathedral High at St Paul's Cathedral on April 17, 2013 in London, England (Footage by WireImage Video/Getty Images)
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Gordon Brown, Sarah Brown at Baroness Thatcher Funeral - St Paul's Cathedral High at St Paul's Cathedral on April 17, 2013 in London, England (Footage by WireImage Video/Getty Images)
Gordon Brown, Sarah Brown at Baroness Thatcher Funeral - St Paul's Cathedral High at St Paul's Cathedral on April 17, 2013 in London, England (Footage by WireImage Video/Getty Images)
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Baroness Thatcher Funeral - Trafalgar Square
Coffin passes Trafalgar Square Baroness Thatcher Funeral - Trafalgar Square at Trafalgar Sq on April 17, 2013 in London, England (Footage by WireImage Video/Getty Images)
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Coffin arrives at St Paul's Cathedral Baroness Thatcher Funeral - St Paul's Cathedral High at St Paul's Cathedral on April 17, 2013 in London, England (Footage by WireImage Video/Getty Images)
Coffin arrives at St Paul's Cathedral Baroness Thatcher Funeral - St Paul's Cathedral High at St Paul's Cathedral on April 17, 2013 in London, England (Footage by WireImage Video/Getty Images)
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Queen Elizabeth II and Prince Phillip, Duke of Edinburgh arrives at St Paul's Cathedral at Baroness Thatcher Funeral - St Paul's Cathedral High at St Paul's Cathedral on April 17, 2013 in London, England (Footage by WireImage Video/Getty Images)
Queen Elizabeth II and Prince Phillip, Duke of Edinburgh arrives at St Paul's Cathedral at Baroness Thatcher Funeral - St Paul's Cathedral High at St Paul's Cathedral on April 17, 2013 in London, England (Footage by WireImage Video/Getty...
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ATMOSPHERE - Baroness Thatcher's coffin passing Parliament Square at Baroness Thatcher Funeral - Parliament Square at Parliament Square on April 17, 2013 in London, England (Footage by WireImage Video/Getty Images)
ATMOSPHERE - Baroness Thatcher's coffin passing Parliament Square at Baroness Thatcher Funeral - Parliament Square at Parliament Square on April 17, 2013 in London, England (Footage by WireImage Video/Getty Images)
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ATMOSPHERE - Gun carriage passes Downing Street at Baroness Thatcher Funeral - Downing Street at Whitehall on April 17, 2013 in London, England (Footage by WireImage Video/Getty Images)
ATMOSPHERE - Gun carriage passes Downing Street at Baroness Thatcher Funeral - Downing Street at Whitehall on April 17, 2013 in London, England (Footage by WireImage Video/Getty Images)
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ATMOSPHERE - Downing Street at Baroness Thatcher Funeral - Downing Street at Whitehall on April 17, 2013 in London, England (Footage by WireImage Video/Getty Images)
ATMOSPHERE - Downing Street at Baroness Thatcher Funeral - Downing Street at Whitehall on April 17, 2013 in London, England (Footage by WireImage Video/Getty Images)
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ATMOSPHERE - Crowds at Baroness Thatcher Funeral - St Paul's Cathedral High at St Paul's Cathedral on April 17, 2013 in London, England (Footage by WireImage Video/Getty Images)
ATMOSPHERE - Crowds at Baroness Thatcher Funeral - St Paul's Cathedral High at St Paul's Cathedral on April 17, 2013 in London, England (Footage by WireImage Video/Getty Images)
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Sarah Ferguson, Duchess of York at Baroness Thatcher Funeral - St Paul's Cathedral High at St Paul's Cathedral on April 17, 2013 in London, England (Footage by WireImage Video/Getty Images)
Sarah Ferguson, Duchess of York at Baroness Thatcher Funeral - St Paul's Cathedral High at St Paul's Cathedral on April 17, 2013 in London, England (Footage by WireImage Video/Getty Images)
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ATMOSPHERE - Baroness Thatcher Funeral - St Paul's Cathedral High at St Paul's Cathedral on April 17, 2013 in London, England (Footage by WireImage Video/Getty Images)
ATMOSPHERE - Baroness Thatcher Funeral - St Paul's Cathedral High at St Paul's Cathedral on April 17, 2013 in London, England (Footage by WireImage Video/Getty Images)
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ATMOSPHERE - Chelsea Pensioners at Baroness Thatcher Funeral - St Paul's Cathedral High at St Paul's Cathedral on April 17, 2013 in London, England (Footage by WireImage Video/Getty Images)
ATMOSPHERE - Chelsea Pensioners at Baroness Thatcher Funeral - St Paul's Cathedral High at St Paul's Cathedral on April 17, 2013 in London, England (Footage by WireImage Video/Getty Images)
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David Cameron, Samantha Cameron arrive at Baroness Thatcher Funeral - St Paul's Cathedral at St Paul's Cathedral on April 17, 2013 in London, England (Footage by WireImage Video/Getty Images)
David Cameron, Samantha Cameron arrive at Baroness Thatcher Funeral - St Paul's Cathedral at St Paul's Cathedral on April 17, 2013 in London, England (Footage by WireImage Video/Getty Images)
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Tony Blair, Cherie Blair, David Cameron, Samantha Cameron at Baroness Thatcher Funeral - St Paul's Cathedral at St Paul's Cathedral on April 17, 2013 in London, England (Footage by WireImage Video/Getty Images)
Tony Blair, Cherie Blair, David Cameron, Samantha Cameron at Baroness Thatcher Funeral - St Paul's Cathedral at St Paul's Cathedral on April 17, 2013 in London, England (Footage by WireImage Video/Getty Images)
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Baroness Thatcher's coffin arrives at St Paul's at Baroness Thatcher Funeral - St Paul's Cathedral High at St Paul's Cathedral on April 17, 2013 in London, England (Footage by WireImage Video/Getty Images)
Baroness Thatcher's coffin arrives at St Paul's at Baroness Thatcher Funeral - St Paul's Cathedral High at St Paul's Cathedral on April 17, 2013 in London, England (Footage by WireImage Video/Getty Images)